Marc Martin
type: MusicGroup
popularity: 2
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0a63342983bb367a951dc9f50581afff28e58af1603c7573c1b5abb66a56dd2e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5777b06a-1c7b-4ef0-b4b0-5d71efdae0cf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5777b06a-1c7b-4ef0-b4b0-5d71efdae0cf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5777b06a-1c7b-4ef0-b4b0-5d71efdae0cf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0a63342983bb367a951dc9f50581afff28e58af1603c7573c1b5abb66a56dd2e","name":"Marc Martin","registered_at":"2026-06-16T20:13:31Z","symbol":"NIM1163035","token_address":"0xaad314edf823618e7ac04cb1d6dde2d6728326bf","type":"artist","uuid":"5777b06a-1c7b-4ef0-b4b0-5d71efdae0cf"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a63342983bb367a951dc9f50581afff28e58af1603c7573c1b5abb66a56dd2e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5777b06a-1c7b-4ef0-b4b0-5d71efdae0cf.json and https://artists.proofprofile.net/proofs/artist/5777b06a-1c7b-4ef0-b4b0-5d71efdae0cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x0a63342983bb367a951dc9f50581afff28e58af1603c7573c1b5abb66a56dd2e","name":"Marc Martin","registered_at":"2026-06-16T20:13:31Z","symbol":"NIM1163035","token_address":"0xaad314edf823618e7ac04cb1d6dde2d6728326bf","type":"artist","uuid":"5777b06a-1c7b-4ef0-b4b0-5d71efdae0cf"}
album: Els Meus Colors
  type: MusicAlbum
  date published: 2015-06-23
album: Els Himnes Pericos D'Avui (Les Cançons de la #meravellosaminoria)
  type: MusicAlbum
  date published: 2016-01-19
  track: Himne Oficial del RCD Espanyol
    type: MusicRecording
    duration: PT1M32S
    duration ms: 92000
    explicit: false
    by artist: Marc Martin
    in album: Els Himnes Pericos D'Avui (Les Cançons de la #meravellosaminoria)
      type: MusicAlbum
      date published: 2016-01-19
    isrc code: ES5951505233
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T19:15:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc3a78f16ae925abcb520be512e9e1a0ad5698f28f53dbf47d468ce302959aa5b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5951505233
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a78f16ae925abcb520be512e9e1a0ad5698f28f53dbf47d468ce302959aa5b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5951505233.
      date published: 2026-07-02T16:51:38Z
    audio: Himne Oficial del RCD Espanyol
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 111.709
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.404
      additional property: Energy
        type: PropertyValue
        value: 0.352
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.993
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.015
      additional property: Liveness
        type: PropertyValue
        value: 0.083
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.703
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.597
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Els Himnes Pericos D'Avui (Les Cançons de la #meravellosaminoria)
  type: MusicAlbum
  date published: 2016-01-19